Results 51 to 60 of about 38,430 (291)
Least-squares for linear elasticity eigenvalue problem
CoRR, 2020 We study the approximation of the spectrum of least-squares operators arising from linear elasticity. We consider a two-field (stress/displacement) and a three-field (stress/displacement/vorticity) formulation; other formulations might be analyzed with similar techniques.
Fleurianne Bertrand, Daniele Boffi
openaire +2 more sources
Velocity‐Tunable Exciton‐Photon Hybridization in Cathodoluminescence
Advanced Functional Materials, EarlyView.Transition‐radiation resonances in suspended thin crystals hybridise with excitonic transitions under free‐electron excitation. By tuning the electron energy, the photonic resonances are continuously detuned across the exciton states, enabling controllable exciton–photon hybridisation below the diffraction limit without altering the system geometry ...
Sven Ebel +4 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.As presented in the graphical abstract, it depicts an image of a terahertz photonic crystal fiber (THz‐PCF) sensor with a polygonal shape in the core, which is filled with an analyte, and air slots in the cladding. The THz waves will travel through the fiber, and due to increased light‐matter interaction in the sensing region, changes in refractive ...
T. H. M. Sumon Rashid +6 more
wiley +1 more source
The least eigenvalue of a graph with cut vertices [PDF]
, 2010 In this paper we characterize the unique graph whose least eigenvalue attains the minimum among all connected graphs of fixed order and given number of cut vertices, and then obtain a lower bound for the least eigenvalue of a connected graph in terms of ...
Wang, Yi, Fan, Yi-Zheng
core +1 more source
A Hybrid Computational Framework for PCF‐based SPR Sensor With Machine Learning and xAI
Advanced Materials Interfaces, EarlyView.A photonic crystal fiber‐based surface plasmon resonance (SPR) sensor integrating rectangular air holes along with conventional circular air holes achieves exceptional wavelength sensitivity of 15,000 nm/RIU across a broad refractive index range of 1.31–1.39. Integrated machine learning with explainable AI (xAI) models achieves high prediction accuracy
Mahabur Rahman Fahim +3 more
wiley +1 more source
Infinite graphs with the least limiting eigenvalue greater than -2 [PDF]
, 1986 Let λ(F) be the least eigenvalue of a finite graph F. The least limiting eigenvalue λ(G) of a connected infinite graph G is defined by λ(G)=infF{λ(F)}, where F runs over all finite induced subgraphs of G.
Aleksandar, Torgašev +1 more
core +1 more source
Advanced Robotics Research, EarlyView.Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds +2 more
wiley +1 more source
Overview of total least squares methods [PDF]
, 2007 We review the development and extensions of the classical total least squares method and describe algorithms for its generalization to weighted and structured approximation problems.
Markovsky, Ivan +3 more
core
Comparison of eigenvalue, logarithmic least squares and least squares methods in estimating ratios [PDF]
, 1984 Three methods—the eigenvalue, logarithmic least squares, and least squares methods—used to derive estimates of ratio scales from a positive reciprocal matrix are analyzed.
Vargas, Luis G., Saaty, Thomas L.
core +1 more source
Advanced Science, EarlyView.A multimodal intravital imaging platform enables longitudinal tracking of human cortical organoids transplanted into chronic stroke lesions. By combining surgical microscopy, MRI, bioluminescence imaging, and two‐photon fluorescence microscopy, the platform captures graft placement, viability dynamics, and cellular‐scale morphology in vivo, offering a ...
Jinghui Wang +12 more
wiley +1 more source